Summary of Contents for Lincoln Electric PRECISION TIG 185

PRECISION TIG 185 For use with machines having Code Numbers: Safety Depends on You Lincoln arc welding and cutting equipment is designed and built with safety in mind. However, your overall safety can be increased by proper installation ... and thought- ful operation on your part.

351040, Miami, Florida 33135 or CSA Standard W117.2-1974. A Free copy of “Arc Welding Safety” booklet E205 is available from the Lincoln Electric Company, 22801 St. Clair Avenue, Cleveland, Ohio 44117-1199. BE SURE THAT ALL INSTALLATION, OPERATION, MAINTENANCE AND REPAIR PROCEDURES ARE PERFORMED ONLY BY QUALIFIED INDIVIDUALS.

ELECTRIC SHOCK can kill. 3.a. The electrode and work (or ground) circuits are electrically “hot” when the welder is on. Do not touch these “hot” parts with your bare skin or wet clothing. Wear dry, hole-free gloves to insulate hands. 3.b.

WELDING SPARKS can cause fire or explosion. 6.a. Remove fire hazards from the welding area. If this is not possible, cover them to prevent the welding sparks from starting a fire. Remember that welding sparks and hot materials from welding can easily go through small cracks and openings to adjacent areas.

The code number is especially important when identifying the correct replacement parts. - Register your machine with Lincoln Electric either via fax or over the Internet. • For faxing: Complete the form on the back of the warranty statement included in the literature packet accompanying this machine and fax the form per the instructions printed on it.

• Do not touch electrically hot parts. • Always connect the PRECISION TIG 185 to a power supply grounded per the National Electrical Code and any local codes. --------------------------------------------------------------------------- SELECT SUITABLE LOCATION Place the welder where clean cooling air can freely circulate in and out through the rear louvers.

1 Also called “inverse time” or “thermal/magnetic” circuit breakers; circuit breakers which have a delay in tripping action that decreases as the magnitude of the current increases. PRECISION TIG 185 Refer Technical circuit breakers. Using fuses or...

------------------------------------------------------------------------ WORK CABLE CONNECTION A work cable with attached work clamp is factory con- nected to the PRECISION TIG 185. To minimize high frequency interference, refer to Machine Grounding and High Frequency Interference Protection sec- tion of this manual for the proper procedure on grounding the work clamp and work piece.

Observe additional Safety Guidelines detailed in the beginning of this manual. ------------------------------------------------------------------------ OPERATION GRAPHIC SYMBOLS THAT APPEAR ON THIS MACHINE OR IN THIS MANUAL INPUT POWER POSITIVE OUTPUT NEGATIVE OUTPUT DIRECT CURRENT PROTECTIVE GROUND WARNING OR CAUTION DO NOT SWITCH WHILE WELDING PRECISION TIG 185...

CONTROLS AND SETTINGS All operator controls and adjustments are located on the front of the PRECISION TIG 185. Refer to Figure B.1 and corresponding explanations. CONTROL FUNCTIONALITY 1. POWER SWITCH – Input line switch turns input power ON or OFF, as indicated by the on or off sta- tus of the front panel digital display (See Item 6).

8. PULSE TIG CONTROL – The Pulse TIG feature built into the Precision TIG 185 is simplified to be a single knob control which sets the Pulse Frequency over the peak pulses/sec. range of about 0.1 to 20 pulses per second: •...

AC wave offers no cleaning action but con- centrates more heat on the work. The AC waveform of the PRECISION TIG 185 opti- mizes cleaning and heating of the work. The result is the capability to weld through the complete range in AC TIG or DC- TIG requiring only one electrode, a 3/32”...

Blue Max Stainless Red Baron Stainless Mild steel procedures are based on recommended procedures listed in C2.10 8/94 and the maximum rating of the PRECISION TIG 185 Blue Max procedures are based on C6.1 6/95 Red Baron Procedure are based on ES-503 10/93...

HOW TO USE TROUBLESHOOTING GUIDE Service and Repair should only be performed by Lincoln Electric Factory Trained Personnel. Unauthorized repairs performed on this equipment may result in danger to the technician and machine operator and will invalidate your factory warranty. For your safety and to avoid Electrical Shock, please observe all safety notes and precautions detailed throughout this manual.

2. The Amptrol may be defective. Check for continuity between pins “D” and “E” on cable connector when Amptrol is depressed. CAUTION PRECISION TIG 185 RECOMMENDED COURSE OF ACTION If all recommended possible areas of misadjustment have been checked and the problem persists, Contact your local Lincoln Authorized Field Service Facility.

3. Set AC Balance control at Auto Balance position. CAUTION PRECISION TIG 185 RECOMMENDED COURSE OF ACTION If all recommended possible areas of misadjustment have been checked and the problem persists, Contact your local Lincoln Authorized Field Service Facility.

1. Micro Switch mounted on Polarity Switch is not opening in “AC” mode. CAUTION PRECISION TIG 185 RECOMMENDED COURSE OF ACTION If all recommended possible areas of misadjustment have been checked and the problem persists, Contact your local Lincoln Authorized Field Service Facility.

4. If a helium blend is used as a shielding gas, then reduce the percentage of helium. CAUTION PRECISION TIG 185 RECOMMENDED COURSE OF ACTION If all recommended possible areas of misadjustment have been checked...

See Electrode Amperage Ranges in the Operation Section of this manual. CAUTION PRECISION TIG 185 RECOMMENDED COURSE OF ACTION If all recommended possible areas of misadjustment have been checked and the problem persists, Contact your local Lincoln Authorized Field Service Facility.

1. The weld current may be set too low. Increase the current control setting or use a smaller diameter electrode. CAUTION PRECISION TIG 185 RECOMMENDED COURSE OF ACTION If all recommended possible areas of misadjustment have been checked and the problem persists, Contact your local Lincoln Authorized Field Service Facility.